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TITAN's Digital RFQ Ion Beam Cooler and Buncher, Operation and Performance

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TLDR
In this paper, the authors present a description of the Radio Frequency Quadrupole (RFQ) ion trap built as part of the TITAN facility, which is the first such device to be driven digitally, i.e., using a high voltage (V pp = 400 V ), wide bandwidth ( 0.2 f 1.2 MHz ) square-wave as compared to the typical sinusoidal wave form.
Abstract
We present a description of the Radio Frequency Quadrupole (RFQ) ion trap built as part of the TITAN facility. It consists of a gas-filled, segmented, linear Paul trap and is the first stage of the TITAN setup with the purpose of cooling and bunching radioactive ion beams delivered from ISAC-TRIUMF. This is the first such device to be driven digitally, i.e., using a high voltage ( V pp = 400 V ), wide bandwidth ( 0.2 f 1.2 MHz ) square-wave as compared to the typical sinusoidal wave form. Results from the commissioning of the device as well as systematic studies with stable and radioactive ions are presented including efficiency measurements with stable 133Cs and radioactive 124,126Cs. A novel and unique mode of operation of this device is also demonstrated where the cooled ion bunches are extracted in reverse mode, i.e., in the same direction as previously injected.

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Journal ArticleDOI

Precision Atomic Physics Techniques for Nuclear Physics with Radioactive Beams

TL;DR: In this article, the basic principles of laser spectroscopic investigations, Penning-trap and storage-ring mass measurements of short-lived nuclei are summarized and selected physics results are discussed.
Journal ArticleDOI

Dawning of the N=32 shell closure seen through precision mass measurements of neutron-rich titanium isotopes

TL;DR: These measurements represent the first scientific results of TITAN using the newly commissioned multiple-reflection time-of-flight mass spectrometer, substantiated by independent measurements from TITAN's Penning trap mass Spectrometer.
Journal ArticleDOI

Phase-Imaging Ion-Cyclotron-Resonance technique at the JYFLTRAP double Penning trap mass spectrometer

TL;DR: The phase-imaging ion-cyclotron-resonance (PI-ICR) technique has been used at the JYFLTRAP double Penning trap mass spectrometer.
Journal ArticleDOI

The LEBIT ion cooler and buncher

TL;DR: A detailed description of the ion cooler and ion buncher installed at the Low Energy Beam and Ion Trap Facility (LEBIT) at the National Superconducting Cyclotron Laboratory (NSCL) is presented in this article.
References
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Journal ArticleDOI

Sur les équations différentielles linéaires à coefficients périodiques

TL;DR: In this paper, Gauthier-Villars implique l'accord avec les conditions générales d'utilisation (http://www.numdam.org/conditions).
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Microchannel plate detectors

TL;DR: A microchannel plate (MCP) as discussed by the authors is an array of 104-107 miniature electron multipliers oriented parallel to one another (see Fig. 1); typical channel diameters are in the range 10-100 μm and have length to diameter ratios (α) between 40 and 100.
Journal ArticleDOI

Theory of the Alternating-Gradient Synchrotron

TL;DR: In this paper, it was shown that if n alternates rapidly between large positive and large negative values, the stability of both radial and vertical oscillations can be greatly increased compared to conventional accelerators in which n is azimuthally constant and must lie between 0 and 1.
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